A figure skater begins spinning counterclockwise at an angular speed of 4.5 π rad/s. During a 4.8 s interval, she slowly pulls her arms inward and finally spins at 7.2 π rad/s.
What is her average angular acceleration
during this time interval?
Answer in units of rad/s
2
.

Step-by-step explanation:

Given that,

Initial angular speed of the skater,

Final angular speed of the skater,

Time interval, t = 4.8 s

We need to find her average angular acceleration  during this time interval. Let be the average acceleration of the skater. So,

So, her angular acceleration is .

step-by-step explanation:

use pothagarean therom

a^2+b^2=c^2 so first ac

acm is a right triangle because c= 90°

and am (the hypotenuse or c) =16+9 =25

but there is not enough info we need another angle or side length

idk

step-by-step explanation:

payback